Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

Solve the mathematical equation in the picture below.

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

The more of this there is, the less you see. What is it?

I look at you, you look at me I raise my right, you raise your left. What am I?

Which digit occurred maximum times between the number 1 and 1000?